Conical bearing retainer capable of reducing noise
By setting up a barrier groove and window beam limit structure in the large-diameter ring frame, the problem of rolling element shaking noise during the operation of tapered roller bearings is solved, and noise reduction and stability are improved.
Patent Information
- Application Number
- CN202422667593.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-11-01
AI Technical Summary
During the operation of existing tapered roller bearings, the rolling element shakes greatly in the axial direction, resulting in large collision noise with the ring frame.
Avoiding grooves are provided in the middle of the large-diameter ring frame, and the grooves extend to the inner surface, which are used to form avoidance when the rolling element is installed, reducing the gap between the rolling element and the ring frame, limiting the rolling element through the window beam and the slope inclined surface, and combining with the ring reinforcement part to enhance the structural strength.
Effectively reduce the axial shaking of the rolling element, reduce noise, and improve the stability and service life of the bearing.
Smart Images
Figure CN223203506U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bearing retainers, and in particular to a noise-reducing tapered bearing retainer. Background Art
[0002] The bearing retainer is a crucial component of a bearing, partially encasing all rolling elements to isolate them, guide their rolling motion, and retain them between the bearing's inner and outer rings. Bearing retainers come in a wide variety of types and structures, with the most common being the tapered bearing retainer, used in tapered roller bearings. The rolling elements in these bearings are truncated cone-shaped structures with large and small round ends. These retainers consist of a large-diameter ring frame and a small-diameter ring frame connected by multiple window beams. A window aperture for mounting the rolling elements is formed between adjacent window beams.
[0003] During the assembly process of tapered roller bearings, the method for installing the rolling elements into the window holes is as follows: place the tapered bearing retainer flat on a horizontal surface with the small-diameter ring frame at the bottom and the large-diameter ring frame at the top, and then install the rolling elements from the inside of the tapered bearing retainer into the window holes. Since the tapered bearing retainer itself has a certain taper, the rolling elements are usually first installed with the small round end in the vertical state into the window holes, and then the inclined rolling elements are installed with the large round end into the window holes. At this time, the taper of the tapered bearing retainer can be used to keep the rolling elements in the window holes, so that the rolling elements will not automatically fall out of the window holes under the action of gravity, so that the assemblers can install rolling elements in all the window holes one by one. However, this method has some disadvantages. For example, after the small round end of the rolling element is installed in the window hole, it is necessary to control the inclination of the rolling element so that the large round end is installed in the window hole. Therefore, the space in the length direction of the window hole not only satisfies the rolling element to roll inside it, but also reserves a gap for the rolling element to tilt and allow the large round end to enter the window hole. This makes the overall length of the window hole much larger than the axial length of the rolling element. Furthermore, after the rolling element is installed in the window hole, there are relatively large gaps between the two axial ends of the rolling element and the small diameter ring frame and the large diameter ring frame respectively. As a result, during the operation of the tapered roller bearing, the rolling element is prone to swing back and forth axially to a large extent, generating a large collision noise with the small diameter ring frame and the large diameter ring frame. This has become a technical problem that needs to be urgently solved in the field of bearing retainers. Utility Model Content
[0004] The present application provides a noise-reducing tapered bearing retainer, which effectively solves the technical problem that during the operation of existing tapered roller bearings, the rolling elements sway back and forth axially and generate large collision noise with the small-diameter ring frame and the large-diameter ring frame.
[0005] The technical solutions adopted in this application are:
[0006] A noise-reducing tapered bearing retainer comprises a large-diameter ring frame and a small-diameter ring frame, wherein the large-diameter ring frame and the small-diameter ring frame are connected by a plurality of window beams, the large-diameter ring frame having a first wall facing the small-diameter ring frame, and the small-diameter ring frame having a second wall facing the large-diameter ring frame, the first wall, the second wall, and two adjacent window beams forming a window hole for mounting a rolling element, an avoidance groove being provided in the middle of the first wall, the avoidance groove extending to the inner surface of the large-diameter ring frame to avoid the rolling element when the rolling element enters the window hole from the inside of the tapered bearing retainer.
[0007] The noise-reducing tapered bearing cage provided in this application also includes the following additional technical features:
[0008] The avoidance groove extends to the outer surface of the large-diameter ring frame, and the depth of the avoidance groove remains consistent from one end connected to the inner surface of the large-diameter ring frame to the other end connected to the outer surface of the large-diameter ring frame.
[0009] The avoidance groove is configured as an arc-shaped groove with an inner surface being a circular arc surface.
[0010] The width dimension of the avoidance groove along the circumferential direction of the large-diameter ring frame is d, the width dimension of the window hole along the circumferential direction of the large-diameter ring frame is D, and d is less than or equal to one half of D.
[0011] The recessed depth of the avoidance groove is h, the length of the large-diameter ring frame along the axial direction is L, and h is less than or equal to one third of L.
[0012] The two side walls of the window beam are provided with inclined surfaces for limiting the rolling body.
[0013] An oil storage tank is provided on the slope pressing surface, and the oil storage tank extends along the width direction of the slope pressing surface.
[0014] One end of the small-diameter ring frame facing away from the window beam is bent inward to form a circular ring reinforcement portion, and the circular ring reinforcement portion is extended along the radial direction of the small-diameter ring frame.
[0015] Due to the adoption of the above technical solution, the technical effects achieved by the present application include at least the following: the tapered bearing retainer of the present application is provided with an avoidance groove in the middle position of the first wall of the large-diameter ring frame, an avoidance space is formed in the avoidance groove, and the avoidance groove extends to the inner surface of the large-diameter ring frame. During the installation of the rolling element from the inner side of the tapered bearing retainer into the window hole, the rolling element is preliminarily placed in a vertical state and the small round end is inserted into the window hole. Then, the rolling element is tilted. At this time, the avoidance formed by the avoidance groove on the large round end of the rolling element allows the large round end to be installed into the window hole. Therefore, the requirement of the rolling element being installed tilted into the window hole can be met only by the avoidance groove. The space along the length direction of the window hole is sufficient for the rolling of the rolling body, and there is no need to reserve a gap as a whole to prevent the rolling body from tilting into the window hole. The distance between the area of the first wall where no depression occurs and the second wall can be minimized as much as possible. Then, when the rolling body is installed in the window hole, the gaps between the two axial ends of the rolling body and the first wall and the second wall respectively are effectively reduced, so that the first wall and the second wall can reliably limit the rolling body in the axial direction. When the tapered roller bearing is in operation, the rolling body will not produce a large reciprocating swing along the axial direction, which greatly reduces the collision noise of the rolling body with the small-diameter ring frame and the large-diameter ring frame respectively, thereby achieving the purpose of noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0017] Figure 1 Axonometric view of the noise-reducing tapered bearing retainer provided in the first embodiment of the present application Figure 1 ;
[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle;
[0019] Figure 3 A front view of a tapered bearing retainer with reduced noise provided by the first embodiment of the present application;
[0020] Figure 4 for Figure 3 Enlarged view of middle part B;
[0021] Figure 5 Axonometric view of the noise-reducing tapered bearing retainer provided in the first embodiment of the present application Figure 2 ;
[0022] Figure 6 for Figure 5 Enlarged view of middle C part;
[0023] Figure 7This is a partially enlarged view of the noise-reducing tapered bearing retainer provided in the second embodiment of the present application.
[0024] List of parts and reference numerals:
[0025] 1 large diameter ring frame, 11 first wall, 12 avoidance groove;
[0026] 2 small diameter ring frame, 21 second wall, 22 circular ring reinforcement;
[0027] 3 window beam, 31 sloped surface, 32 oil storage tank;
[0028] 4 window holes. DETAILED DESCRIPTION
[0029] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.
[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.
[0031] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0032] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. Throughout this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0033] In the embodiments of this application, a tapered bearing retainer with noise reduction is provided. For ease of explanation and understanding, the following content provided herein is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and schematic illustration and does not constitute a specific limitation on the technical solution provided herein.
[0034] like Figures 1 to 7 As shown, the present application provides a noise-reducing tapered bearing retainer, comprising a large-diameter ring frame 1 and a small-diameter ring frame 2, wherein the large-diameter ring frame 1 and the small-diameter ring frame 2 are connected by a plurality of window beams 3, wherein the large-diameter ring frame 1 has a first wall 11 facing the small-diameter ring frame 2, and the small-diameter ring frame 2 has a second wall 21 facing the large-diameter ring frame 1, and the first wall 11, the second wall 21 and the two adjacent window beams 3 form a window hole 4 for mounting a rolling element, and an avoidance groove 12 is provided in the middle position of the first wall 11, and the avoidance groove 12 extends to the inner surface of the large-diameter ring frame 1 to avoid the rolling element when the rolling element enters the window hole 4 from the inside of the tapered bearing retainer.
[0035] The tapered bearing retainer of the present application is provided with an avoidance groove 12 in the middle position of the first wall 11 of the large diameter ring frame 1, and an avoidance space is formed in the avoidance groove 12. The avoidance groove 12 extends to the inner surface of the large diameter ring frame 1. During the installation of the rolling body from the inner side of the tapered bearing retainer to the window hole 4, the rolling body can be pre-erected in a vertical state and the small round end can be installed in the window hole 4, and then the rolling body can be tilted. At this time, the large round end of the rolling body is avoided by the avoidance groove 12 and the large round end is installed in the window hole 4. Therefore, the requirement of the rolling body being installed obliquely into the window hole 4 can be met only by the avoidance groove 12. The space of the window hole 4 along the length direction is On the basis of satisfying the rolling of the rolling body, there is no need to reserve a gap as a whole to allow the rolling body to tilt into the window hole 4. The distance between the area of the first wall 11 where no depression occurs and the second wall 21 can be minimized as much as possible. Then, after the rolling body is installed in the window hole 4, the gaps between the two axial ends of the rolling body and the first wall 11 and the second wall 21 respectively can be reduced, so that the first wall 11 and the second wall 21 can reliably limit the rolling body in the axial direction. When the tapered roller bearing is in operation, the rolling body will not produce a large reciprocating rocking in the axial direction, which greatly reduces the collision noise of the rolling body with the small-diameter ring frame 2 and the large-diameter ring frame 1, thereby achieving the purpose of noise reduction.
[0036] Regarding the structure of the avoidance groove 12, as a preferred embodiment, Figure 2 and Figure 4As shown, the relief groove 12 extends to the outer surface of the large-diameter ring frame 1, and the depth of the relief groove 12 remains consistent from one end connected to the inner surface of the large-diameter ring frame 1 to the other end connected to the outer surface of the large-diameter ring frame 1. Those skilled in the art will appreciate that the tapered bearing retainer itself is a tapered annular structure. Machining holes or grooves in this annular structure requires high positioning accuracy and machining equipment, resulting in a complex process. Therefore, the above arrangement simplifies the structure of the relief groove 12 and facilitates machining. For example, the relief groove 12 can be punched out by simply securing the large-diameter ring frame 1 with machining equipment and then punching from the inner surface of the large-diameter ring frame 1 to the outer surface, or from the outer surface of the large-diameter ring frame 1 to the inner surface. Of course, the above arrangement also facilitates cutting the relief groove 12.
[0037] Further, if Figure 2 As shown, the avoidance groove 12 is configured as an arc-shaped groove with an arc-shaped inner surface. Those skilled in the art will appreciate that, because the rolling element of a tapered roller bearing is a truncated cone, when the rolling element tilts and the large round end enters the window hole 4, the arc-shaped groove has a good fit with the conical surface of the large round end, allowing the avoidance groove 12 to effectively avoid the large round end. Furthermore, the arc-shaped groove is a relatively easy groove structure to process in stamping and cutting processes.
[0038] As a preferred embodiment, Figure 2 As shown, the width dimension of the avoidance groove 12 along the circumferential direction of the large-diameter ring frame 1 is d, and the width dimension of the window hole 4 along the circumferential direction of the large-diameter ring frame 1 is D, and d is less than or equal to one-half of D. It will be understood by those skilled in the art that, on the basis that the avoidance groove 12 can avoid the large circular end, the width dimension d of the avoidance groove 12 is limited to a reasonable range. For example, when D is 10 cm, d can be selected as 5 cm or a value less than 5 cm, as long as it can avoid the rolling element so that it can fully enter the window hole 4. In the circumferential direction of the large-diameter ring frame 1, the avoidance groove 12 only occupies a small area of the first wall 11, so that the first wall 11 still retains a large part of the unrecessed area to axially limit the rolling element, thereby minimizing the impact of the avoidance groove 12 on the rolling process of the rolling element in the window hole 4.
[0039] As a preferred embodiment, Figure 3 and Figure 4As shown, the recessed depth of the avoidance groove 12 is h, and the axial length of the large-diameter ring frame 1 is L, where h is less than or equal to one-third of L. It will be understood by those skilled in the art that, on the basis that the avoidance groove 12 can provide relief for the large circular end, the recessed depth h of the avoidance groove 12 is limited to a reasonable range. For example, when L is 6 cm, h can be selected as 2 cm or a value less than 2 cm, as long as it can provide relief for the rolling element so that it can fully enter the window hole 4. This avoids the avoidance groove 12 being too deep and thus causing an excessive impact on the strength of the large-diameter ring frame 1. This ensures that the large-diameter ring frame 1 still has good strength and stability even with the avoidance groove 12, thereby stabilizing the service life of the cage.
[0040] As a preferred embodiment of the present application, Figures 5 to 7 As shown, the two side walls of the window beam 3 are provided with a sloped surface 31 for limiting the position of the rolling element. Those skilled in the art will appreciate that the sloped surface 31 is formed by pressing using a slope pressing device. The material in the pressed area accumulates and hardens on the sloped surface 31, thereby increasing the strength of the sloped surface 31 and making it less susceptible to wear by the rolling element.
[0041] As a preferred embodiment, the slope 31 can be Figure 6 As shown in FIG, a complete inclined surface has a simple structure. As another preferred embodiment, as shown in FIG. Figure 7 As shown, an oil reservoir 32 can be provided on the pressure ramp surface 31, extending along the width of the pressure ramp surface 31. The presence of the oil reservoir 32 helps reduce the contact area between the pressure ramp surface 31 and the rolling elements, thereby reducing the friction experienced by the rolling elements during rolling. Furthermore, the oil reservoir 32 forms a circulation channel for lubricating oil to circulate within the window hole 4. During operation of the tapered roller bearing, the rolling elements roll within the window hole 4, and the lubricating oil, driven by the rolling elements, circulates within the window hole 4 through the oil reservoir 32, fully lubricating the rolling elements and helping to reduce friction and noise.
[0042] As a preferred embodiment of the present application, Figure 5 As shown, the end of the small-diameter ring frame 2 facing away from the window beam 3 is bent inward to form a circular reinforcement portion 22, which extends radially along the small-diameter ring frame 2. The circular reinforcement portion 22 effectively enhances the structural strength of the small-diameter ring frame 2, thereby effectively improving the vibration and impact resistance of the tapered bearing retainer and extending its service life. Moreover, the circular reinforcement portion 22 does not interfere with the rolling of the rolling elements within the window aperture 4.
[0043] Anything not described in this application can be achieved by adopting or drawing on existing technologies.
[0044] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.
[0045] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.
Claims
1. A tapered bearing retainer with noise reduction, characterized in that: It includes a large-diameter ring frame and a small-diameter ring frame, which are connected by multiple window beams. The large-diameter ring frame has a first wall facing the small-diameter ring frame, and the small-diameter ring frame has a second wall facing the large-diameter ring frame. The first wall, the second wall and two adjacent window beams form a window hole for installing a rolling body. An avoidance groove is provided in the middle of the first wall. The avoidance groove extends to the inner surface of the large-diameter ring frame to avoid the rolling body when the rolling body enters the window hole from the inside of the tapered bearing retainer.
2. The noise-reducing tapered bearing retainer according to claim 1, characterized in that: The avoidance groove extends to the outer surface of the large-diameter ring frame, and the depth of the avoidance groove remains consistent from one end connected to the inner surface of the large-diameter ring frame to the other end connected to the outer surface of the large-diameter ring frame.
3. The noise-reducing tapered bearing retainer according to claim 2, characterized in that: The avoidance groove is configured as an arc-shaped groove with an inner surface being a circular arc surface.
4. The noise-reducing tapered bearing retainer according to claim 3, characterized in that: The width dimension of the avoidance groove along the circumferential direction of the large-diameter ring frame is d, the width dimension of the window hole along the circumferential direction of the large-diameter ring frame is D, and d is less than or equal to one half of D.
5. The noise-reducing tapered bearing retainer according to claim 3, characterized in that: The recessed depth of the avoidance groove is h, the length of the large-diameter ring frame along the axial direction is L, and h is less than or equal to one third of L.
6. The noise-reducing tapered bearing cage according to claim 1, characterized in that: The two side walls of the window beam are provided with inclined surfaces for limiting the rolling body.
7. The noise-reducing tapered bearing retainer according to claim 6, characterized in that: An oil storage tank is provided on the slope pressing surface, and the oil storage tank extends along the width direction of the slope pressing surface.
8. The noise-reducing tapered bearing cage according to claim 1, characterized in that: One end of the small-diameter ring frame facing away from the window beam is bent inward to form a circular ring reinforcement portion, and the circular ring reinforcement portion is extended along the radial direction of the small-diameter ring frame.